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Maybe the power supply just boosts the signal, so some people with short cables or high end cables don't need it. It does say this switch gives the HDMI signals a little boost, i guess it needs power to do that.
I got one on the way from Amazon just waiting for it to arrive to test.
I have a 4k Chromecast Ultra that i can't use at the moment. No ports left on TV and i don't want anything connected currently removed. |
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